Middlings-purifier.



G 5 Iurm L. A. TATOR. MIDDLINGS PURIFIER. A LIGATIoN NLRB 001'. a, 1907.

930,504. Patented Aug. 10,1909.

WITNESSES 1W VEWTOR wax Ll/THER. A. A7105 ANDREMF. GRAHAM 00.. PKOYO LITNIIQRAPHERS, vnsmnuron. D. c,

; UNITED STATES PATENT onnron.

LUTHER A. TATOR, MILAN, MICHIGAN, ASSIGNOR OF ONE-THIRD TO CHARLES H.

WILSON AND ONE-THIRD TO MYRON W. WILSON, OF MILAN, MICHIGAN.

MIDDLING-S PURIFI ER.

Application filed October 5, 1907. Serial No. 396,034.

To all whom it may concern:

Be it known that I, LUTHER A. TATOR, a citizen of the United States of America, residing at Milan, in the county of Washtenaw and State of Michigan, have invented certain new and useful Improvements in Middlings- Purifiers, of which the following is a s ecification, reference being had therein to t e accompanying drawings.

The invention re ates to middlings purifiers and has for its object the obtaining of a machine of simple construction, dispensing with the usual power driven conveyers and efiecting the purification of the stock without detrimental abrasive action thereon.

It is a further object to effect an accurate grading of the stock, and further to prevent the introduction of dust impurities in the stock.

These objects are attained by the construction as hereinafter set forth.

In the draWingsFigure 1 is a vertical central section through the machine; Fig. 2 is a cross section on line :Jc r, Fig. 1; Fig. 8 is a fragmentary section on line yy, Fig. 1.

In the present state of the art, the purification of middlings is usually accomplished by feedin the stock over a reciprocatory screen, throug which an upwardly directed air current is passed to remove the dust and im urities. This reciprocatory screen is usua y arranged in a stationary easing into Which the air is drawn through openings in the side by means of a fan or other suction device arranged above the screen. Mechanically driven devices are employed for cleaning the screen, and the stock which passes through the screen is carried by mechanically driven conveyers, usually worm conveyers, to the various points of discharge.

With my improved construction, instead of reciprocating the screen within a stationary housing, I employ an oscillating housing, and in place of power driven devices for cleaning the screen and feeding the stock, this is efiected by the oscillation of the housing. Thus the machineis greatly simplified in construction and the power required for its operation reduced.

As illustrated, A is a suitable open frame work and B is the oscillatory housing mounted thereon. The housing B is preferably supported by hanger rods Q at the opposite en s and sides thereof, and oscillatory movement is imparted to thecasing by a crank D revolv- Spe'cification of Letters Patent.

Patented Aug. 10, 1909.

ing in a horizontal plane beneath the casing and actuated by suitable driving mechanism. F-is the screen mounted upon a suitable frame and arranged Within the housing B in the inclined position illustrated. Beneath this screen is a substantial arallelly arranged apron G for collecting the stock passing through the screen and conveying it, 'dur-. ing the oscillation of the casing, to one end thereof. This apron G is formed with a central longitudinally extending aperture 'E therein, having upturned flanges H surrounding the same, and above the aperture is arranged a ca member I, having faces 0 positely incline from a central ridge to direct the material lodging thereon to the imperforate portion of the apron. Beneath the apron G is a second apron J of similar construction' but reversely inclined to discharge at the opposite end of the casing. Beneath the latter apron is the bottom K of the easing, which is provided with a series of apertures L therein, to which air may be admitted.

M is a fan or suction device located within the casing B above the screen, and preferably in a compartment. N se arated from the screen com artment by t e horizontalpartition O. n this partition 0 are a series of valve controlled openings, the valves P of which may be adjusted to various positions by suitable external operative adjusting devices such as the members P. The fan M, though located within the casing B, is mountedupon bearings secured to the rigid frame A. These bearings include brackets Q upon the side bars of the frame A and forming journals for the fan arbor, while the fan casingis supported by a top plate R secured to the side and extending above the casing B. The fan casing depends from this plate B and extends through an aperture S in the top of the casing B, while the shaft or arbor of the and by means of flexible tube V. The tailings from the lower end of the screen are discharged through a spout W, which is vented bythe grating W in the side thereof. The discharge from the apron G is through a spout U adjacent to the spout W, and is discharged from the apron J through a spout J at the opposite end of the casing. The apron G is also provided with a series of cut-off slides X which, when 0 en, will permit the discharge of the materia from the upper portion of said apron on to the lower apron J l/Vith the construction as described, in operation, rotary motion being imparted to the crank D and also to the fan arbor, the housing B will be given a longitudinal and lateral oscillatory movement and at the same time suction will be produced in the chamber N, which is communicated through the valve controlled openings in the partition 0 to the chamber above the screen. The stock to be purified is fed through the flexible tube V and to the up er end of the screen F, and is distributed t ereover and gradually fed downward by the oscillatory movement of the casing. During this movement the upward draft of air passing through the screen will carry off the impurities, and at the same time the stock is graded, a portion of it pass ing through the screen F onto its apron G and another portion tailing over the end of the screen F and discharging through the s out WV. The screen is formed of a series of c oths of different mesh becoming progressively coarser toward the lower end, and thus the material first passing through the screen is the finest, While that from the opposite end is coarser. Separation between these two grades may be effected by drawing one of the slides X, and by selecting different members of the series of the slides the desired grading effect is obtained. The material dropped upon the a ron and u on the ca I is fed downward by the osc' ation of tie casing, While the incoming draft of air passes between the fianges H and the cap, the cap preventing the passage of the material through the aperture. The cutofl' X ermits the discharge of the material fromt 1e upper apron to the lower one where it is conveyed to the discharge spout J, while the material falling upon the apron G, below the cut-off, will be discharged through the spout U. The tailings from the screen F drop through the spout W, while the incoming air through the grating W passing through this discharge will effect further urification. To clean the screen, I preferabl y employ any of the means well known in the art, but, as this feature forms no art of my invention, I have omitted it from t e drawings for the sake of elearness.

What I claim as my invention is: 1. A purifier comprising an oscillatory casing, an inclined screen within said casing, an inclined apron beneath said screen, a discharge spout for said screen, means within said casing for causing an upward draft of air through said screen, and stationary supports without said casing to which said means is secured.

2. A purifier comprising an oscillatory casing, an inclined screen therein, an inclined apron beneath said screen, a discharge spout for said apron, said. apron being apertured, a deflector cap above said apron, means within said casing for causing an upward draft of air through the aperture in said apron and through the screen, and stationary supports without said casing to which said. means is secured.

A purifier comprising an. oscillatory casing, having an aperture therein, an inclined screen within the casing, a suction fan also located within the casing and extending outwardly through the aperture, said aperture being of suflicient size to permit of relative oscillation between the fan and easing, stationary supports without the casing to which the fan is secured, and means for maintaining said casing air tight.

4t. A purifier comprising an oscillatory casing having an aperture therein, a screen within the casing, a suction fan also within the casing above said screen and extending outward through the aperture, said aperture being of sufiicient size to permit of relative oscillation between the fan and easing, stationary supports for said fan arranged without the casing, and a flexible connection for sealing the joint between said casing and said fan.

5. A purifier comprising an oscillatory casing, a horizontal partition in said casing having apertures therein, adjustable valves controlling said apertures, an inclined screen beneath said partition, an apertured bottom for said casing and a suction fan within said casing above said partition for causing an upward draft of air through said apertured bottom and screen, and stationary supports for said fan without said casing.

6. A purifier comprising an oscillatory casin a screen within said casing, an inclined apron beneath said screen, being centrally and longitudinally apertured, upturned flanges on said apron bounding the aperture therein, a cap above said flanges and spaced therefrom having the central ridge and portions oppositely inclined there from, substantially as and for the purpose described.

7. A purifier comprising a casing, an inclined screen therein, an inclined apron beneath said screen centrally and longitudinally apertured, a cap guarding said aperture, and a suction fan within said casing above said partition for causing an upwar draft of air through said apertured, bottom and screen, and stationary supports for said fan without said casing.

' 8. A purifier comprising an oscillatory casing, an inclined screen within said casing,

an inclined apron beneath said screen, a discharge spout for said screen, a suction fan directly above said screen and apron for causing an upward draft of air through said screen, and. stationary supports without said casing to which said fan 1s secured.

9. A purifier comprising an oscillatory casing having an aperture therein, and a suction fan located within the casing and extending outward through the aperture, said aperture being of sufficient size to permit of relative oscillation between the parts, and stationary suplports for said fan, whereby the casing osc1 ates independent of the fan.

10. A purifier comprising an oscillatory casing, an inclined screen therein, discharge spouts at the opposite ends of the casing, an inclined apron beneath said screen leading to one of the discharge spouts, an o positely inclined apron leading to the other lscharge spout, means for discharging material from said a ron at various points in the len th upon t e lower apron, a suction fan witl nin said casing, and stationary supports for said fan without the casing.

In testimony whereof I affix my signature in presence of two Witnesses.

LUTHER A. TATOR.

Witnesses:

NELLIE KINSELLA, JAMES P. BARRY. 

